Hinge locking system

ABSTRACT

A hinge locking system is provided for locking pivotable hinge parts at a desired angular position relative to one another. The hinge locking system includes a locking pin, a plate with a locking pin receiver, a movable pin receiver defining an axial bore for receiving the locking pin, and a pair of spaced-apart limit stops along the plate. The movable pin receiver is movable relative to the plate, and the limit stops are selectively contacted by the movable pin receiver to limit the maximum relative movement of the movable pin receiver. When the axial bore of the movable pin receiver aligns with the plate&#39;s locking pin receiver, the locking pin is insertable through the locking pin receiver and the axial bore in the movable pin receiver, to thereby lock the movable pin receiver and the hinge parts against further movement.

CROSS REFERENCE TO RELATED APPLICATIONS

The present application is a continuation of U.S. patent application Ser. No. 16/565,220, filed Sep. 9, 2019, now U.S. Pat. No. 10,568,297, issued Feb. 25, 2020, which is a continuation of U.S. patent application Ser. No. 16/278,409, filed Feb. 18, 2019, now U.S. Pat. No. 10,405,516, issued Sep. 10, 2019, which is a continuation-in-part of U.S. patent application Ser. No. 15/689,660, filed Aug. 29, 2017, now U.S. Pat. No. 10,206,369, issued Feb. 19, 2019, which claims the filing benefit of U.S. provisional application, Ser. No. 62/381,347, filed Aug. 30, 2016, which are all hereby incorporated herein by reference in their entireties.

FIELD OF THE INVENTION

The present invention relates to hinges, particularly lockable hinges for locking pivotably coupled panels or rails.

BACKGROUND OF THE INVENTION

Those who move livestock, goods, or materials over-the-road from one location to another, for reason of work, hobby or show, typically do so using towable trailers especially designed for this purpose. For purposes of discussion, horses as a form of livestock will be referenced throughout the present application because they are a common livestock animal that is carried in over-the-road trailers, such as behind pickup trucks, vans, and other towing vehicles, but it will be appreciated that horses are intended to represent substantially any animal that is transported by trailer and should be provided with more moving space and/or outdoor time each day.

After a day of travel it is necessary or desirable, for the safety and wellbeing of the horses, to unload them from the confines of the trailer's interior and provide them with an area where they can be free to move about in the open air. Although one option for traveling horse handlers is to identify and rent a horse boarding facility for overnight accommodations, it is not uncommon for a horse handler to carry portable sections of steel fencing, such as in the back of the tow vehicle or strapped to the side of the trailer, in order to construct a temporary makeshift corral or pen. For example, handlers may generally carry a sufficient quantity of fencing to erect their own ten to twelve foot diameter corral at a temporary site along their travel route. Fences and other corral components are often pivotably coupled to one another to allow a user to adjust or position the components as required to create a corral or pen in the allocated space. The process of loading, unloading, erecting, disassembling, and storing these corral fences is laborious and time consuming, and can be prohibitive for horse handlers of smaller stature or those with certain physical limitations or disabilities. Once at a destination such as a work site, a fair or a showing event where the horses will be temporarily corralled for several days, this difficult process must be repeated to return the livestock to their home quarters.

SUMMARY OF THE INVENTION

The present invention provides a hinge locking system for locking a pivotable rail or fence portion at an angular position relative to another rail or fence portion. The hinge locking system includes a tracking pin that follows a guide channel as the pivotable rail pivots relative to the other rail. When the pivotable rail is positioned at the desired angular position relative to the other rail, a locking pin is insertable through the tracking pin and upper and lower plates of the locking system to secure the pivotable rail at the desired angular location. The hinge locking system is particularly useful with deployable corral rails that are integrally connected to a transport trailer, such as a livestock trailer. The deployable corral rails create a fenced-in space outside the trailer, such as for animals or even for sales personnel to have a walking space. The transport trailer with deployable corrals may optionally include storage for feed, bedding materials, tools, water, display goods or other vendor displays, equipment, and the like.

According to one form of the present invention, a hinge locking system is provided for locking a pivotably operable rail at a desired angular position relative to another set or relatively stationary rail of which the pivotably operable rail pivots in relation to. The rails may be portions of a deployable corral or fence. The hinge locking system includes a locking pin, a guide channel, a tracking pin defining an axial bore, and an upper and a lower pivot plate spaced apart from one another. The upper and lower pivot plates include respective holes that are aligned with one another. The tracking pin is received in the guide channel and the tracking pin moves along the guide channel as the pivotably operable rail is pivoted relative to the set rail from a first position to a desired angle at a second position. When the axial bore of the tracking pin aligns with the holes in the upper and lower pivot plates, the locking pin is insertable through both of the holes and through the axial bore in the tracking pin to lock the pivotably operable rail at one of the first position and the second position. The first position of the pivotably operable rail may be substantially perpendicular to the set rail and the second position of the pivotably operable rail may be angled at an obtuse angle relative to the set rail. The hinge locking system is particularly well suited for locking a pivotable elongated rail at a desired angular position relative to another elongated rail, while allowing one rail to pivot relative to the other rail when the locking system is not in the locked configuration. It will be appreciated that the hinge locking system is also suitable for use with other pivotable components, such as panels, fences, and gates.

In one aspect, the guide channel is defined by an upper guide on a lower portion of the upper pivot plate and a lower guide on an upper portion of the lower pivot plate. The upper guide is located directly above the lower guide. In one aspect, the upper guide is defined by a downward facing arcuate channel and the lower guide is defined by an upward facing arcuate channel. The tracking pin includes an upper end configured to follow along the upper guide as the pivotably operable rail is pivoted relative to the set rail and a lower end configured to follow along the lower guide as the pivotably operable rail is pivoted. The axial bore of the tracking pin passes through the upper end and the lower end of the tracking pin.

In yet another aspect, the respective holes of the upper and lower pivot plates are disposed through the upper guide and the lower guide, respectively. When the axial bore of the tracking pin aligns with the holes in the upper and lower pivot plates, the locking pin is insertable through the hole in the upper pivot plate, through the upper guide, through the axial bore in the upper end and the lower end of the tracking pin, through the lower guide, and through the hole in the lower pivot plate to lock the pivotably operable rail at one of the first position and the second position. Preferably, the upper and lower pivot plates are disposed on a proximal end of the pivotably operable rail and the tracking pin is disposed on a distal end of the set rail.

In another form of the present invention, a deployable corral system for a transport trailer includes a pair of extendable corral rails that each have a proximal end portion and a distal end portion. The proximal end portion of each extendable corral rail is configured for attachment to the trailer. The extendable corral rails are movable between an extended position and a retracted position relative to the trailer. A corral cross-rail is pivotably coupled to the distal end portion of at least one of the extendable corral rails, such that the corral cross-rail is pivotable relative to the extendable corral rail. When the extendable corral rails of the corral system are in the extended position the corral cross-rail is spaced horizontally away from an upright wall of the trailer and when the extendable corral rails are retracted the corral cross-rail is positioned adjacent the upright wall. The corral system includes a hinge locking system for locking the corral cross-rail at an angular position relative to the extendable corral rail. The extendable corral rails and the corral cross-rail, in the extended position, cooperate with the upright wall of the trailer to define a corral area.

In one aspect, the hinge locking system of the corral system includes a locking pin, a guide channel, a tracking pin defining an axial bore, and an upper and a lower pivot plate spaced apart from one another. The upper and lower pivot plates include respective holes that are aligned with one another. The tracking pin is received in the guide channel and the tracking pin moves along the guide channel as the corral cross-rail is pivoted relative to the extendable corral rail from a first position to a desired angle at a second position. When the axial bore of the tracking pin aligns with the holes in the upper and lower pivot plates, the locking pin is insertable through both of the holes and through the axial bore in the tracking pin to lock the corral cross-rail at one of the first position and the second position. The first position of the corral cross-rail may be substantially perpendicular to the extendable corral rail and the second position of the corral cross-rail may be angled at an obtuse angle relative to the extendable corral rail.

In another aspect, the corral system includes a drive system operable to move the extendable corral rails between the extended and retracted positions. The drive system includes a powered drive system, which includes an actuator, such as an electric actuator or a fluid powered actuator. The corral system includes securing member that is movable between a securing position and a releasing position to selectively secure one of the extendable corral rails in the retracted position. When the securing member is in the securing position the drive system is deactivated, and when the securing member is in the releasing position the drive system is activatable. Optionally, the corral system includes a position sensor configured to sense if the securing member is in the securing position or the releasing position, such that when the securing member is in the securing position the drive system is deactivated, and when the securing member is in the releasing position the drive system is activatable.

Therefore, the hinge locking system is provided for locking a pivotable elongated rail at a desired angular position relative to another elongated rail. The hinge locking system is particularly useful with deployable corral rails that are integrally connected to a transport trailer, such as a livestock trailer. The hinge locking system includes a locking pin, a guide channel, a tracking pin defining an axial bore, and an upper and a lower pivot plate spaced apart from one another. The tracking pin moves and follows along the guide channel as the pivotably operable rail is pivoted relative to the other set rail. The upper and lower pivot plates include respective holes aligned with one another and when the axial bore of the tracking pin aligns with the respective holes, the locking pin is insertable through the respective holes and the tracking pin to lock the pivotably operable rail at desired angular position relative to the other rail.

These and other objects, advantages, purposes, and features of the present invention will become more apparent upon review of the following specification in conjunction with the drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

FIG. 1 is a front perspective view of a transport trailer with deployable corral in accordance with the present invention, shown in a travel-ready configuration;

FIG. 2 is rear perspective view of the transport trailer with deployable corral of FIG. 1 ;

FIG. 3 is left side elevation of the transport trailer with deployable corral of FIG. 1 ;

FIG. 4 is another front perspective view of the transport trailer with deployable corral, shown with two corrals in their respective deployed configurations;

FIG. 5 is another front perspective view of the transport trailer with deployable corral of FIG. 4 ;

FIG. 6 is a rear perspective view of the transport trailer with deployable corral of FIG. 4 ;

FIG. 7 is a rear elevation transparent line drawing of the transport trailer with deployable corral of FIG. 4 ;

FIGS. 8-13 are left-rear perspective views of the transport trailer with deployable corral of FIG. 1 , depicting sequential steps of deploying the left side deployable corral;

FIGS. 14A-14F are rear elevation transparent line drawings of a left side portion of the transport trailer with deployable corral of FIG. 1 , depicting sequential steps of stowing the left side deployable corral;

FIG. 15 is a left side perspective view of an alternative cable-drive corral deployment and stowage mechanism for a transport trailer in accordance with the present invention, taken from a forward viewpoint;

FIG. 16 is another left side perspective view of the alternative cable-drive corral deployment and stowage mechanism of FIG. 15 , taken from a rearward viewpoint;

FIG. 17 is a left side perspective view of an alternative corral extension and retraction mechanism, taken from a lower viewpoint;

FIG. 18 is a left side perspective view of a portion of the alternative corral extension and retraction mechanism of FIG. 17 ;

FIG. 19 is a left side perspective view of an alternative leadscrew-drive corral deployment and stowage mechanism for a transport trailer in accordance with the present invention, taken from a forward viewpoint;

FIG. 20 is another left side perspective view of the alternative leadscrew-drive corral deployment and stowage mechanism of FIG. 19 , taken from a rearward viewpoint;

FIG. 21 is a perspective transparency line drawing of the leadscrew-drive of FIGS. 19 and 20 ;

FIG. 22 is a rear perspective view of a transport trailer with superimposed alternative single-cylinder linkage corral deployment and stowage mechanism;

FIG. 23A is a rear perspective view of the single cylinder linkage of FIG. 22 , shown in a deployed position;

FIG. 23B is another rear perspective view of the single cylinder linkage of FIG. 23A, shown in a retracted or stowed position;

FIG. 24 is a rear perspective view of a transport trailer with superimposed alternative double-cylinder linkage corral deployment and stowage mechanism;

FIGS. 25A-25I are front-right perspective views of another transport trailer with deployable corral in accordance with the present invention, depicting sequential steps of deploying the right side deployable corral;

FIGS. 26A-26C are perspective views of a rail-mountable storage bin, depicting sequential steps of opening top and front panels thereof;

FIGS. 27A-27C are perspective views of a hinge with a hinge guide and locking system, depicting sequential steps of locking, unlocking, and operating the hinge;

FIGS. 28A-28B are perspective views of an extendable support leg, depicting sequential steps of raising and lowering the support leg;

FIGS. 29A-29D are perspective views of a pivotable water trough, depicting sequential steps of deploying and stowing the water trough;

FIGS. 30A-30C are perspective views of a pivotable flap, depicting sequential steps of deploying and stowing the pivotable flap; and

FIG. 31 is a top plan view of another transport trailer in accordance with the present invention, with top portions and corrals omitted to show interior 320 structure.

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS

Referring now to the drawings and the illustrative embodiments depicted therein, a transport trailer with integrated corral system 10 includes a transport trailer 12, such as a livestock trailer, and two deployable corrals 14 that extend and retract relative to respective sides of trailer 12, such as shown in FIGS. 1-7 . In the illustrated embodiment, corrals 14 are essentially self-contained and integrated into trailer 12, and are capable of push button deployment and retraction by a single operator or user. Corrals 14 deploy to create fenced-in spaces 16 outside the trailer 12 for animals to have a walking space while they are not being transported. The corrals 14 may provide storage for feed, bedding materials, tools, water, saddles, and the like in one or more bins 20, which are positioned above the trailer 12 in the retracted or stowed position of FIGS. 1-3 . Thus, the transport trailer with integrated corral system 10 greatly simplifies the setup and takedown of a portable corral that travels with the trailer, and which is self-powered so as to reduce or eliminate much of the manual lifting that is usually associated with temporary care of livestock.

Although it is expected that the principles of the present invention would commonly be implemented in the context of livestock trailers, it will be appreciated that other applications are also envisioned, such as for use as portable vendor displays for goods or services, as will be described below. Thus, the term “corral”, as used herein, is not to be construed as being limited to livestock containment applications, but instead may refer to substantially any containment or barricade or wall for substantially any purpose. Likewise, it will be understood that references to horses or other livestock herein are for purposes of providing examples of applications and features of the disclosed embodiments, and are not intended to limit the invention to livestock transport and containment applications. In addition, while the various embodiments are described with reference to a towable trailer, it will be appreciated that the principles of the present invention may be adapted to cargo vans, trucks, and self-powered recreational vehicles, and even to stationary structures such as sheds and homes where temporary corrals or pens are desired, without departing from the spirit and scope of the present invention.

Each deployable corral 14 includes a pair of pivotably extendable corral rails 18 having respective proximal end portions 18 a that are pivotably coupled at or along an exterior side panel or upright wall 22 of livestock trailer 12, the rails 18 having distal end portions 18 b that extend out from exterior side panels 22 when in the deployed or extended positions of FIGS. 4-7 . When corral rails 18 are moved to the stowed or retracted position of FIGS. 1-3 , distal end portions 18 b are positioned near upper corners of trailer 12 where exterior side panels 22 meet a roof panel 24. A corral cross-rail 26 is coupled to each distal end portion 18 b of each extendable corral rail 18, and cooperates with the corral rails 18 and the trailer's side panel 22 to define fenced-in corral space 16 when the corral 14 is deployed. In the illustrated embodiment, a corral swing gate 28 is pivotably coupled to each rearward cross-rail 26, and provides access to corral space 16 when swing gate 28 opened, such as shown at left in FIGS. 4 and 5 in which the gate 28 is illustrated simultaneously in both opened and closed positions. It will be appreciated that each forward cross-rail 26 may also be fitted with a swing gate, so that one swing gate may be used to close the access opening to fenced-in area 16, and the other swing gate may be used to support a storage bin 20 that is accessible to livestock in the fenced-in area 16.

Extendable corral rails 18 are pivotably coupled to trailer 12 at respective rail pivots 30 located at bottom corners of trailer 12 near where exterior side panels 22 terminate (FIGS. 7-9 and 14A-14F). Rail pivots 30 define a common horizontal pivot axis that extends longitudinally along trailer 12 below each side panel 22. In the illustrated embodiment, corral rails 18 are two-piece units including an inboard rail portion 32 (which forms proximal end portion 18 a) and an outboard rail portion 34 that forms distal end portion 18 b and is longitudinally extendable and retractable relative to inboard rail portion 32, such as shown in FIGS. 4-7 and 14A-14C. When corral rails 18 are moved to the stowed or retracted position of FIGS. 1-3 , distal end portions 18 b are positioned near upper corners of trailer 12 where exterior side panels 22 meet a roof panel 24.

Optionally, in an alternative embodiment, the extendable corral rails are slidably coupled to trailer at respective rail slides located at bottom corners of trailer 12 near where exterior side panels 22 terminate. Rail slides define a horizontal movement path that extends laterally into a footprint of the trailer 12 defined by the trailer walls. In this embodiment, the corral rails may be two-piece units including an inboard rail portion and an outboard rail portion that is longitudinally extendable and retractable relative to the inboard rail portion similar to the arrangement shown in FIGS. 4-7 and 14A-14C. When the corral rails are slidably moved to the stowed or retracted position, their distal end portions are positioned near lower corners of exterior side panels 22 of trailer 12, and their corresponding cross-rails are positioned along the exterior side panels 22, or may be contained within recesses formed in the side panels 22, similar to the recessed channels 58 provided to receive the extendable corral rails 18, which are described below in more detail.

A support leg 36 is pivotably coupled to each of the distal end portions 18 b of the extendable corral rails 18 where the corral rail 18 meets cross-rail 26, with another support leg 36 at the opposite end of each cross-rail 26. Each support leg 36 has a support wheel 38 rotatably mounted at its distal end, for rolling support of corral rails 18, cross-rails 26, and storage bins 20 along the ground or other support surface. Optionally, instead of support wheels it is envisioned that each support leg 36 may be fitted with a skid plate or the like, which would slide along the ground or support surface during extension and retraction of the corral rails. It is further envisioned that each support leg could be length-adjustable to accommodate uneven terrain.

Support legs 36 extend downwardly from the corral rails 18 and cross-rails 26 when the corral rails 18 are in the extended position of FIGS. 4-7 and 14A. Support legs 36 extend upwardly from the corral rails 18 and cross-rails 26 when the corral rails 18 are in the retracted position of FIGS. 1-3 and 14F, although it should be understood that the support legs and wheels are not illustrated in FIGS. 1-3 . The mechanism that causes support legs 36 to pivot approximately 90-degrees while corral rails 18 also pivot approximately 90-degrees, which results in approximately 180-degree change of orientation for support legs 36, is part of the mechanism that raises and lowers corral rails 18 and cross-rails 26, and will be described below.

Optionally, and with reference to FIGS. 28A-28B, similar support legs 436 extend downwardly from the cross-rails 26 to support the corral rails 18 and cross-rails 26 when they are in the extended position. Support legs 436 are configured to slidably extend downward through a slidable mount 438 to a deployed position, and slidably retract upward through the slidable mount 438 to a stowed position. Support legs 436 are adjustable to a desired height via respective pins 440 that pass through the slidable mount 438 and into one or more of a plurality of holes 442 disposed along the support leg 436, such that the support leg 436 is constrained from vertical movement when the pin 440 is inserted as shown. In the illustrated embodiment the holes 438 are evenly spaced and arranged along most of the length of the support legs 436. Optionally, the pin 440 includes a spring-release detent or spring-loaded actuator that secures the pin in the aligned holes 438 until manually released by the user.

Each of the extendable corral rails 18 has a respective corner post 40 extending upwardly from its distal end portion 18 b. Corner posts 40 also form the upright ends of respective corral cross-rails 26, such as shown in FIGS. 4-14F. A pair of upper corral rails 42 is pivotably attached at its proximal end 42 a to each corner post 40, and rails 42 are movable between a stowed position that is generally parallel to cross-rails 26 and perpendicular to extendable corral rails 18 (FIGS. 8-11 and 14A-14F), and a deployed position that is generally perpendicular to cross-rails 26 and parallel to extendable corral rails 18 (FIGS. 4-7 and 13 ). The individual rails of each set of upper corral rails 42 of each deployable corral 14 are staggered in height, such as shown in FIGS. 7, 9-11, and 14A-14F, so that the two sets of upper corral rails 42 may overlap one another vertically when in their stowed position of FIGS. 1-3, 9-11, and 14A-14F, for compactness.

Once extendable corral rails 18 are fully extended, upper corral rails 42 may be manually pivoted to their deployed positions by pivoting them in the manner indicated by arrows in FIGS. 12 and 13 , so that they are parallel to their respective extendable corral rails 18. In the deployed position, each upper corral rails' distal end 42 b is proximate the trailer's exterior side panel 22. Optionally, each upper corral rail 42 may be longitudinally extendable and retractable, such as in a two-piece telescoping arrangement, to substantially match the overall length of extendable corral rails 18 in extended or retracted positions. This permits a user to decide whether to fully extend the corral rails 18, such as due to space constraints where the trailer 12 is located, and then size the upper corral rails 42 accordingly.

A latch 44 (FIGS. 4-7 ) in each individual rail of upper corral rails 42 is actuatable to secure distal ends 42 b of upper corral rails 42 at exterior side panel 22, to prevent undesired pivoting of upper corral rails 42 when corral 14 is deployed and in use, such as could be caused by a horse or other livestock leaning against upper corral rails 42. In the illustrated embodiment, latches 44 are slide-pins disposed in hollow tubular upper corral rails 42, whose tips extend from the rails 42 and into receiving bores 46 (FIGS. 7 and 20 ) or the like in exterior side panel 22. However, it will be appreciated that other types of manual or automatic actuating latches may be used. In addition to latches 44 securing upper corral rails 42 in their deployed positions, latches 44 may be used to secure upper corral rails 42 in their stowed positions in a similar manner, although it will be appreciated that clips, straps, or other securing devices or fasteners may be used to secure upper corral rails 42 in their stowed positions, along cross-rails 26, prior to raising them with extendable corral rails 18 and cross-rails 26.

A powered drive system 48 is provided for raising and lowering the deployable corrals 14, as best shown in FIGS. 7 and 14A-14F. Drive system 48 includes a double-acting piston-cylinder 50 operatively coupled to each extendable corral rail 18 and to a lower region of trailer 12. In the illustrated embodiment, piston-cylinders 50 include a pivotally-mounted hydraulic cylinder 50 a coupled to trailer 12, which cylinder 50 a receives pressurized hydraulic fluid from a motor-driven pump (not shown), and an extendable and retractable piston and associated piston rod 50 b that extends laterally outwardly from exterior side panel 22 (or from below or in front of the side panel 22, such as between a forward vertical edge of the side panel and a fairing) and is pivotally coupled to an upward-extending tab 52 at a proximal end of outboard rail portion 34. A pivot arm 53 is coupled to tab 52 and piston rod 50 b by a small shaft, as best shown in FIG. 24 , and rotates relative to corral rail 18 and piston rod 50 b as corral rail 18 pivots up and down. Pivot arm 53 is pivotally coupled to a support leg link 54, which is coupled at its opposite end to an upward-extending tab 56 associated with support legs 36, with support leg link 54 causing support legs 36 to pivot relative to extendable corral rails 18 and cross-rails 26 during raising and lowering of corrals 14, but not during extension and retraction of outboard rail portions 34 relative to inboard rail portions 32.

Referring to FIGS. 14A-14F, in which several steps of corral retraction and raising are depicted, from the deployed or fully extended position of FIG. 14A to the stowed or fully retracted position of FIG. 14F, the retraction of outboard rail portion 34 relative to inboard rail portion 32, the pivoting of support legs 36, and the raising of extendable corral rails 18, cross-rails 26, and associated components, are all accomplished by operating piston-cylinder 50 to retract piston rod 50 b into cylinder 50 a. It will be appreciated that other stowage steps, such as closing lids or covers of storage bins 20, and moving upper corral rails 42 to their stowed positions, may be accomplished manually prior to operating piston-cylinder 50. In addition, various sensors may be provided to ensure that piston-cylinder 50 cannot be operated when upper corral rails 42 are deployed, when swing gate 28 is open, or when lids of storage bins 20 are open or unlocked, to ensure that the corral 14 is ready for retraction before powered drive system 48 is operated.

From the fully extended configuration of FIG. 14A, piston-cylinder 50 is activated to begin drawing piston rod 50 b into cylinder 50 a and thereby pulling outboard rail portion 34 (via upwardly-extending tab 52) laterally inboard toward trailer 12. This causes outboard rail portion 34 to slide along inboard rail portion 32 while support wheels 38 roll along the ground or other support surface, such as shown in FIG. 14B. Once outboard rail portion 34 is fully retracted (FIG. 14C), extendable corral rails 18 are at their minimum length and further retraction of piston rod 50 b causes extendable corral rails 18, cross-rails 26, and attached components to rise in a pivoting manner (FIG. 14D) due to the laterally inward force being applied by piston rod 50 b to upwardly-extending tab 52, which is spaced a distance above the fixed rail pivots 30.

As extendable corral rails 18, cross-rails 26, and their attached components continue to pivot upwardly about rail pivots 30, the portions of piston rods 50 b that extend beyond tabs 52 (i.e., where support leg links 54 are attached) are pivoted to be closer to extendable corral rails 18 and moved into closer proximity to rail pivots 30. This movement causes support leg links 54 to be moved inward, generally toward rail pivots 30, as extendable corral rails 18 rise upwardly about rail pivots 30, which in turn causes upward-extending tabs 56 to move inwardly toward rail pivots, thus causing the associated support legs 36 to pivot upwardly (clockwise as viewed in FIGS. 14D-14F) until they are substantially parallel to extendable corral rails 18 and extend upwardly once corrals 14 reach their stowed or fully retracted configuration of FIGS. 1-3 and 14F. Deployment of the corrals 14 is accomplished in essentially the reverse order of the retraction steps described above, and may be further understood with reference to FIGS. 8-13 .

Optionally, and with reference to FIGS. 30A-30C, additional securing members in the form of latches 510 are provided to secure corral rails 18 in their vertical orientations along exterior side panels 22, so that piston-cylinders 50 are not solely relied upon to maintain corrals 14 in their raised and stowed positions during transport. Each latch 510 includes a flap 512 pivotally mounted to the exterior side panel 22 of the trailer 12 via hinges 514. However, it will be appreciated that other types of latch or securing member may be used, such as a slide latch that slides between a blocking or secured position, and an unblocking or released position.

In the illustrated embodiment, each flap 512 defines a pair of support holes 516 that receive and support the distal ends 42 b of respective upper corral rails 42 when the upper corral rails are extended toward the trailer 12, such as in the manner described above. Latch 510 further includes a lock mechanism 518, such as a simple slide member, to secure the flap 512 when the latch 510 is in a closed position. Optionally, each latch 510 further includes a position sensor 520 configured to communicate the position of the flap to a user or to a controller. The sensor 520 generates a signal indicative of flap position, such as a warning indicator to warn a user that the corral 14 should not be raised or lowered until the flaps 512 are opened. When a controller is provided, the signals from the sensors 520 can be used to disable the actuators and thereby prevent the deployable corral 14 from extending or retracting unless the flap 512 is indicated to be in an open position.

Referring to FIGS. 4-13 , trailer 12 includes vertical recessed channels or recesses 58 at forward and rearward ends of exterior side panels 33. Recessed channels 58 receive extendable corral rails 18 and other components of corrals 14 when corrals 14 are raised, so that corral rails 18 are substantially flush with exterior side panels 22 when corrals 14 are fully stowed. Trailer 12 further includes a forward aerodynamic fairing 60 that extends a sufficient distance upwardly above the trailer's roof panel 24 so as to provide a wind break for storage bins 20, cross-rails 26, swing gate 28, and upper corral rails 42 when these components are all positioned above roof panel 24 for over-the-road transport. Trailer 12 includes other standard components including dual axle wheels 62 and a rear lift gate and ramp 64, which may also be considered an upright wall when closed as shown. Although deployable corrals 14 are shown as being mounted and deployable along the side panels 22 of trailer 12, it will be appreciated that a deployable corral may also (or instead) be fitted at a rear of the trailer, with the rear lift gate and ramp 64 being lowerable into the fenced-in corral space created by the rear-mounted deployable corral, without departing from the spirit and scope of the present invention.

Power drive system 48 may be operated by a pushbutton controller or the like, placed anywhere along the trailer that allows or causes the user to stay clear of the moving components while monitoring their operation to ensure that corrals 14 deploy and stow correctly, and without contact with obstructions. For example, a handheld pendant controller may be connected via wire to the powered components (e.g., electric motor or combustion engine, fluid valves, solenoids, etc.) of drive system 48, and stowed in a storage area when not in use. It is further envisioned that a wireless remote control may be used to operate drive system 48, and/or that a key system may be provided to ensure that only authorized users are able to actuate the system.

In addition, the controller may provide fault or warning messages or other visual or audio indications to the operator in the event that a sensor detects an obstruction or a not-ready indication (e.g., a storage bin 20 left open or upper corral rails 42 locked in the deployed positions when corral 14 is to be raised). Additional functionality may be provided, such as by adding powered actuators to move upper corral rails 42 after extendable corral rails 18 are fully extended, or prior to retraction of the extendable corral rails 18, and automatically sequenced as appropriate so that a single user input can be used to initiate a full extension or retraction sequence. A programmable logic controller (PLC) or the like may be used to facilitate operation and control of the powered drive system 48 as desired.

Optional features of trailer 12 and deployable corrals 14 include a shade awning 66 that is stored in rolled form along an upper edge of each side panel 22, and a retractable feed or water trough 68 that extends outwardly from side panel 22 and retracts into the side panel 22 for transport. Shade awning 66 is a flexible sheet supported on a rotatable spring-loaded or motor-driven spool (not shown) that is mounted in a longitudinal recess 69 (FIG. 1 ) at each corner where roof panel 24 is nearest to the respective side panel 22. It should be understood that in FIGS. 14A-14E presented herein, shade awning 66 appears as a rigid sheet that appears to pass through other components and does not wind onto a spool, which reflects a limitation in the software used to generate those particular images and should not be taken literally. A distal end of shade awning 66 is mounted to an elongate end support rod 70 that is supported at its opposite ends by a pair of awning support rods 72, which are pivotally mounted at their lower ends to proximal end portions of respective outboard rail portions 34, near upwardly-extending tabs 52. Awning support rods 72 may be spring-biased outwardly away from side panels 22 so that they will act on end support rod 70 to draw shade awning 66 off of its spool and out over at least a portion of fenced-in corral space 16 as the spool unwinds the shade awning (FIGS. 6-13 ). The unwinding and rewinding of shade awning 66 may be accomplished manually, or in a self-powered manner such as in response to an extend/retract switch or control. When shade awning 66 and extendable corral rails 18 are retracted, awning support rods 72 recess into vertical recessed channels 58 alongside corral rails 18, for unobtrusive storage.

Water troughs 68 may be manually unlatched and pulled down to deploy when corrals 14 are in use (FIGS. 4-7, 11-14A, 29A-29D), and manually raised and re-latched to stow for transport when corrals (14) are not in use (FIGS. 1-3, 8-10, 29B and 29D). However, it is envisioned that water troughs 68 may be raised and lowered in a powered manner, such as in response to a pushbutton control, and may be raised and lowered automatically in response to retracting and extending of the corrals. For example, powered deployment and retraction of troughs 68 may be sequenced automatically with other deployment and retraction steps or functions associated with corral 14, as described above. Water troughs 68 may also be deployed independently of corrals 14, such as to provide water for livestock that are tied to trailer 12 or that are free to roam around the trailer when the corrals 14 are not deployed. Water may be added to each trough 68 from an on-board water reservoir stored on trailer 12, such as by a pump or gravity feed, or may be added from an external source such as a bucket or hose. It is envisioned that troughs may be drained of water through a drain opening or valve prior to stowage, or may simply be stowed with water still present, such that the water spills out as the trough 68 is lifted and tilted up to its stowed position.

Water troughs 68 include a pivotably deployable trough vessel 568, a pivotable hinge mount 570, an exterior panel 572, and a hinge mounting plate 574. Optionally, the water trough 68 includes a fill port 576 that is configured to receive a water line used to fill the trough vessel 568. When deployed, the trough vessel 568 may be filled using a water line (not shown) extending between fill port 576 and a plumbing system of the trailer. This allows that trough vessel 568 to be filled from a water tank (not shown) contained within the trailer, with gravity-feed or a pump arrangement used to supply water pressure, and a valve (not shown) provided to selectively fill the vessel 568. The valve may be accessed through a cutaway portion 582 formed in the trailer side panel 22. Optionally, the trough vessels 568 may be manually filled with a bucket or external hose. A water drainage pathway may be provided within the trailer's side panel 22, so that any water remaining in the vessel 568 can simply spill down through the side panel 22 and onto the ground when the vessel 568 is pivoted up to its stowed configuration. Optionally, the water trough 68 includes a lock or latch 578 disposed on the exterior panel 572 to secure the water trough 68 while in a stowed configuration. The exterior panel 572 may include a cover portion 580 configured to cover the cutaway portion 582 of the side panel 22. The cutaway portion 582 is configured to allow the fill port 576 and a portion of the associated water line to pass through the trailer side panel 22 when the water trough 68 is pivoted between configurations.

In addition to water troughs 68 that provide water to livestock in the fenced-in space 16 defined by a given corral 14, animal feed may be made available to the livestock from one of storage bins 20, such as the central storage bin mounted to swing gate 28. Referring to FIGS. 4 and 5 , when swing gate 28 is open, fenced-in space 16 is accessible from outside the corral and the storage bin 20 that is supported on swing gate 28 is made accessible to livestock in the fenced-in space 16. However, because having swing gate 28 open leaves an opening to fenced-in space 16, it would be desirable to provide a cable or a second swing gate or other temporary closure between the cross-rails 26 while swing gate 28 is open, to limit or prevent livestock from exiting the fenced-in space 16. Alternatively, the storage bin 20 can be moved to the inward-facing side of either of the cross-rails 26 or the swing gate 28 (with swing gate 28 closed) to provide livestock with access to the contents of the bin. Although the central-mounted storage bin 20 that is mounted on swing gate 28 is described as being available for storage of animal feed and providing livestock with access to the feed as desired, it will be appreciated that the central-mounted storage bin 20 may also provide a convenient receptacle for bedding and other waste materials that a user may wish to remove from the fenced-in space 16 prior to retracting and stowing corrals 14. It will be appreciated that the principles of the cargo transport or livestock trailer with deployable corral system may be accomplished in different ways, and are not limited to those described hereinabove. For example, it is envisioned that the corral system may be retrofitted to existing livestock trailers using bolt-on components and with little modification to the trailer, albeit perhaps with a less compact stowed configuration. In addition, torsion springs, gas struts, or the like may be used to reduce the loads that must be lifted by the powered drive system. By further example, and with reference to FIGS. 15-18 , an alternative cable-operated powered drive system 80 may have potentially lower weight and cost as compared to hydraulic drive system 48. Cable-operated system 80 includes a drive spool or pulley 82 at a lower region of vertical recessed channel 58, with a flexible cable 84 wound around pulley or spool 82 (FIG. 16 ). Cable 84 extends upwardly to an idler pulley 86 and then has a distal end 84 a coupled to extendable corral rail 18, such as approximately mid-way along outboard rail portion 34 (FIGS. 15 and 17 ). Drive pulley 82 is turned by a motor (not shown) in a first direction to unwind cable 84 and lower extendable corral rails 18, and is turned in a second, opposite direction to wind cable 84 onto pulley 82 and draw the corral rails 18 up and into vertical recessed channels 58 to stow the corrals. Although idler pulley 86 could be eliminated by placing the drive pulley 82 in its location, the use of an elevated idler pulley facilitates placement of the motor associated with drive pulley 82 at a lower and less obtrusive location near the other mechanisms, including water trough 68. In addition, cable-operated system 80 can readily accommodate a manual override feature for use in the event of a drained battery or other power system failure, such as by allowing use of a wrench or hand-crank to turn the drive spool or pulley 82.

In the illustrated embodiment of FIGS. 15-18 , cable-operated system 80 is not capable of extending and retracting outboard rail portions 34 relative to inboard rail portions 32. However, such extension and retraction may be accomplished with a corral rail extension system 90 that utilizes a pair of leadscrews 92 disposed along respective corral rails 18, such as shown in FIGS. 17 and 18 . Leadscrews 92 may be conventional in that they include a threaded shaft 92 a and a threaded nut or collar (mounted inside an elongate cylinder 92 b) arranged so that the shaft 92 a extends and retracts longitudinally relative to the cylinder 92 b upon rotation of the shaft 92 a. In the arrangement of FIGS. 17 and 18 , each shaft 92 a has a driven gear or pulley 94 at its distal end, which driven gears or pulleys 94 are located at a distal or outboard end of each corral rail 18 and are operatively coupled to respective outboard rail portions 34. A drive gear or pulley 96 is centrally located between the driven gears or pulleys 94, with the three drive gears or pulleys 94, 94, 96 all rotatably mounted on a cross-beam 98 that extends generally between the distal ends of the corral rails 18.

A pair of endless flexible drive members in the form of drive chains or belts 100 extend around drive gear or pulley 96 and around respective ones of the driven gears or pulleys 94, so that rotation of the drive gear or pulley 96 causes both driven gears or pulleys 94 to rotate in a synchronized manner. This causes each leadscrew shaft 92 a to rotate in a synchronized manner, thus causing leadscrews 92 to move outboard rail portions 34 inwardly or outwardly depending on the direction of rotation. In the illustrated embodiment, drive gear or pulley 96 includes a central drive shaft that is configured to be engaged and rotatably driven by a separate tool such as a cordless power drill 102, or by a manual tool such as a wrench or screwdriver, or the drive shaft may be fitted with a manual knob or crank that can be grasped and rotated by hand. Optionally, and to provide unobstructed access to the fenced-in area 16 through swing gate 28 when opened, cross-beam 98 and gears or pulleys 94, 96 may be readily detachable from the ends of leadscrew shafts 92 a, which may be journaled in respective support bearings or bushings connected to outboard rail portions 34.

In the illustrated embodiment of FIGS. 19-21 , a powered leadscrew 104 is substituted for piston-cylinder 50 of powered drive system 48, described above. Powered leadscrews 104 act upon extendable corral rails 18 through upward-extending tabs 52 in substantially the same way that piston-cylinder 50 operates, but it will be appreciated that powered leadscrews 104 can eliminate the need for a hydraulic pump and associated motor, instead utilizing a relatively compact drive motor 106 that may be electrically (or hydraulically) energized, a gear train reduction 108, and a rotatably driven nut or collar 110, such as shown in FIG. 21 . A cylindrical housing 112 is pivotally mounted to trailer 12 in substantially the same manner that cylinder 50 a would be mounted, and receives a proximal portion of a threaded shaft 114 that attaches to tab 52 and extends and retracts in response to the activation of motor 106 to drive the nut or collar 110 that engages shaft 114. Powered leadscrew 104 may be modified to accommodate a manual override feature, such as by allowing use of a wrench or hand-crank 115 to turn the threaded nut or collar 110.

In the illustrated embodiment of FIGS. 22 and 23 , an optional single cylinder linkage 116 provides lifting capability for deployable corrals, and is shown in phantom and spaced rearwardly of corral rail 18 and rear lift gate and ramp 64 in FIG. 22 . Linkage 116 includes a piston-cylinder assembly 118 having a cylinder 118 a pivotally mounted at its proximal end to trailer 12 at or near vertical recessed channel 58. It should be understood that, as mentioned above, in FIG. 22 linkage 116 is spaced rearward from its as-installed position so that its components can be clearly shown. A piston rod 118 b extends downwardly from cylinder 118 a and pivotally connects to a proximal end of outboard rail portion 34 via a generally L-shaped yoke 120. Cylinder 118 a is activated to extend piston rod 118 b and thereby cause corral rail 18 to pivot out of vertical recessed channel 58 and down to a substantially horizontal orientation, whereupon further extension of piston rod 118 b causes outboard rail portion 34 to slide or telescope outwardly relative to inboard rail portion 32 until the corral rail 18 is fully extended (FIG. 22 ). Partial retraction of piston rod 118 b causes outboard rail portion to slide fully inwardly along inboard rail portion 32 so that corral rail 18 assumes its fully retracted and shortest configuration (FIG. 23A). Full retraction of piston rod 118 b (FIG. 23B) causes corral rail 18 to pivot upwardly for stowage in the transport position, in which corral rail 18 and piston-cylinder assembly 118 are substantially parallel to one another and stowed in vertical recessed channel 58 of trailer 12.

It will be appreciated that single-cylinder linkage 116 has a mechanical advantage over the powered drive system 48 because piston-cylinder assembly 118 acts on approximately a midpoint of corral rail 18 when outboard rail portion 34 is fully extended, which gives a much longer moment arm to rail pivots 30 than does upwardly-extending tab 52 of drive system 48. It will further be appreciated that the pivoting movement of yoke 120 relative to corral rail 18 can be used to effect pivoting movement of support legs 36 using a support leg link and tab that are similar to leg link 54 and tab 56 described above, so that the support legs 36 are oriented substantially parallel to corral rails 18 when corrals 14 are stowed.

Referring to another alternative powered drive system as shown in FIG. 24 , a dual cylinder linkage 122 utilizes two separate piston-cylinder assemblies 124, 126 for providing lateral extension/retraction and pivoting movement of extendable corral rails 18, respectively. As with FIG. 22 , in FIG. 24 dual cylinder linkage 122 is shown in phantom lines and is positioned rearwardly from its as-installed position so that its components can be clearly shown. Extension/retraction piston-cylinder assembly 124 has a double-acting cylinder 124 a coupled to outboard rail portion 34 and a piston rod 124 b coupled to inboard rail portion 32, such that extension and retraction of piston rod 124 b relative to cylinder 124 a causes corral rail 18 to extend and retract with outboard rail portion 34 telescoping relative to inboard rail portion 32.

Pivoting piston-cylinder assembly 126 has a double-acting cylinder 126 a coupled to trailer 12 at or near vertical recessed channel 58, and a piston rod 126 b coupled to inboard rail portion 32 at an upward-extending tab 128, such that extension and retraction of piston rod 126 b relative to cylinder 126 a causes corral rail 18 to pivotally lower to a substantially horizontal deployed position (shown) and rise to a stowed position with corral rail 18 disposed in vertical recessed channel 58. For deployment of corral 14, pivoting piston-cylinder assembly 126 would typically actuate (extend) first until the associated support wheels are resting along the ground or support surface, and then the extension/retraction piston-cylinder assembly 124 would actuate (extend) until corral rails 18 reach their maximum length. For retraction of corral 14, the pivoting piston-cylinder assembly 126 and extension/retraction piston-cylinder assembly 124 would typically actuate (retract) in the opposite order.

Optionally, and with reference to FIG. 25A-25I, another transport trailer with integrated corral system 210 includes a transport trailer 212, such as a livestock trailer, and two deployable corrals 214 that extend and retract relative to respective sides of trailer 212. Deployable corrals 214 are similar in many respects to the deployable corrals 14 described above, such that the following description will focus mainly on different aspects of corrals 214, which are lighter weight and less costly to manufacture, but which can still provide a comparable amount of fenced-in area 216 (FIGS. 25F-25I) as compared to the fenced-in area 16 of corrals 14. Each deployable corral 214 includes a pair of pivotably-extendable corral rails 218 that, unlike corral rails 18 described above, are not telescopically extendable. Deployable corrals 214 may be raised and lowered using a powered drive system such as one of the powered drive systems described above. However, because deployable corrals 214 are lighter weight and less complex than those of the embodiments described above, corrals 214 may be more suitable for a manual drive system, either as primary/sole drive system or as backup to a powered drive system.

Corral rails 218 have respective proximal end portions 218 a that are pivotably coupled at or along an exterior side panel 222 of livestock trailer 212, and respective distal end portions 218 b that are positioned near the trailer's roof panel 224 in the stowed configuration of FIG. 25A, and are spaced laterally outwardly from trailer 212 in the deployed configuration of FIGS. 25B-25I. The corral rails' distal end portions 218 pivotably support corral cross-rails 226 that include respective upwardly-extending corner posts 240 to which a set of upper corral rails 242 are pivotably attached. Thus, upper corral rails 242 may be stored parallel to corral cross-rails 226 as in FIG. 25B, and may be pivoted so that their distal ends (which include latches 244) can be coupled to the trailer 212 near its sidewall 222, such as shown in FIGS. 25C-25I.

Corral cross-rails 226 are pivotable from their stowage position in which they are substantially perpendicular to their respective corral rails 218 (FIGS. 25A-25D) to deployed positions in which they are angled away from trailer sidewall 222 and form obtuse angles relative to corral rails 218 (FIGS. 25E-25I). This allows deployable corrals 214 to form a more rounded fenced-in area 216, which can make it easier for horses to turn and maneuver within the area, as compared to a rectangular fenced-in area. It will be appreciated that this feature may also be applied to the deployable corral 14 with telescopically extendable corral rails 18 described in earlier embodiments.

Below each corner post 240, where each corral cross-rail 226 is pivotably coupled to a respective corral rail 218, there is a pair of plates 231, 233 that are attached to corral cross-rail 226 and corral rail 218, respectively, and which are vertically offset from one another and have respective through-holes formed therein for receiving a lock pin 235. The through-holes of the plates 231, 233 align when corral cross-rail 226 is substantially perpendicular to its corral rail 218, and lock pin 235 may be spring-loaded so as to automatically extend through both through-holes upon alignment, so as to substantially lock corral cross-rail 226 against pivoting relative to corral rail 218. Optionally, an additional through-hole formed in the plate 231 of corral cross-rail 226 is positioned to align with the through-hold formed in the plate 233 of corral rail 218 when the corral cross-rail 226 is pivoted outwardly to an angled position, such as shown in FIGS. 25E-25I. Lock pin 235 is spring-loaded will automatically drop or snap down through both through-holes when the corral cross-rail 226 has reached the desired angled position, thus providing a clear indication to the user that the corral cross-rails 226 are positioned correctly for the use of a pivotable swing gate 228.

In the illustrated embodiment of FIGS. 27A-27C, the corral cross-rails 26 are pivotably coupled to extendable corral rails 18 with respective hinge locking systems 310 mounted at the distal end 18 b of each extendable corral rail 18 and the proximal end 26 a of each corresponding corral cross-rail 26. The hinge locking system 310 includes an upper pivot plate 312, a lower pivot plate 314, an upper guide 316 defining a downwardly-facing arcuate channel, and a lower guide channel 318 defining an upwardly-facing arcuate channel directly below the downwardly-facing channel of the upper pivot plate 312. The hinge locking system 310 further includes a tracking pin 320 with upper and lower ends received in the upper and lower guide channels, respectively, and a locking pin 322 that is used to set the angle of the corral cross-rail 26 relative to the corresponding extendable corral rail 18.

The pivot plates 312, 314 are secured to a proximal end 26 a of the corral cross-rail 26 and extend beyond a pivot joint 324 coupling the cross-rail 26 to the extendable corral rail 18, such that the pivot plates 312, 314 extend laterally beyond the exterior surfaces of the corral cross-rail 26 and extendable corral rail 18 and, preferably, do not extend into the enclosed portion of the corral. Because all parts of each hinge locking system 310 are located either within the footprint of the cross-rail 26 and extendable corral rail 18, or outboard of that footprint, horses or other livestock in the fenced-in area are less likely to place a hoof atop the upper pivot plate 312 to support part of their weight upon the hinge parts from inside the fenced-in area.

The upper and lower guides 316, 318 are disposed between the pivot plates 312, 314 and guide the tracking pin 320, which is fixed relative to the distal end 18 b of the extendable corral rail 18 by a bracket 321. As the corral cross-rail 26 pivots relative to the extendable corral rail 18, the tracking pin 320 tracks within the arcuate channels defined by the guides 316, 318 and as the tracking pin 320 meets the ends of the arcuate channels of the guides 316, 318, the corral cross-rail 26 is prevented from pivoting any farther. The tracking pin 320 defines an axial bore that receives the locking pin 322. The locking pin 322 is inserted through one of a plurality of holes 328 in the upper pivot plate 312, through the tracking pin 320 when properly aligned, and through a corresponding one of a set of holes 330 in the lower pivot plate 314 to lock the corral cross-rail 26 into the desired angular position. Additional holes 328 and 330 may be disposed along the pivot plates 312, 314 and within the guides 316, 318 to provide additional locking positions for the corral cross-rail 26 relative to the extendable corral rail 18.

In the illustrated embodiment of FIGS. 25A-25I, the rearward corral cross-rail 226 supports pivotable swing gate 228 that latches to a distal end of the forward corral cross-rail 226, such as shown in FIGS. 25G and 25H. Swing gate 228 can be manually unlatched and swung inwardly or outwardly (FIG. 25I) to provide access to fenced-in area 216. Optionally, the swing gate's latch 229 may be lockable to help secure livestock in the fenced-in area 216.

Like deployable corrals 14, deployable corrals 214 of FIGS. 25A-25I include storage bins 220 mounted along outboard sides of each corral cross-rail 226. In the illustrated embodiment of FIGS. 25A-25I, and as best shown in FIGS. 26A-26C, storage bins 220 are designed to facilitate storage and access to animal feed, tools, and other supplies that may be useful to animal handlers. Each storage bin 220 includes a fixed rear wall 250, fixed sidewalls 252, and a fixed bottom wall 254. A pivotable top wall or lid 256 is hinged to an upper region of rear wall 250, and a pivotable front wall 258 is hinged to a forward region of bottom wall 254 (FIGS. 26B and 26C). Pivotable front wall 258 includes a pair of front wall sidewalls 260 that move with the front wall 258 and are spaced inwardly from fixed sidewalls 252, with pivot-limiting struts 262 coupled between fixed sidewalls 252 and front wall sidewalls 260 and serving to hold front wall 258 in a substantially horizontal orientation when opened, such as shown in FIG. 26C. Because storage bins 220 may be mounted at their fixed rear walls 250 to vertical surfaces or supports such as corral cross-rails 226, and may be loaded with hay bales, tools, water jugs, or other heavy articles, structural bracing 264 may be provided along fixed rear wall 250 to ensure sufficient strength and durability.

The configuration of storage bins 220 makes them well-suited for storing and transporting hay bales or straw bales for animal feed or bedding, and for providing livestock with access to the contents of storage bins 220 if desired, while minimizing the amount of manual lifting required of a handler. For example, when storage bins 220 are attached to corral cross-rails 226 and corrals 214 are deployed and the storage bins' front walls 258 are open as shown in FIG. 26C, the upwardly-facing inner surface of front wall 258 provides a low platform on which a bale may be lifted and placed, without requiring that the bale be lifted to chest height or even to waist height. Once a bale or other heavy object is resting on the upwardly-facing inner surface of front wall 258, it can be accessed by livestock if desired, or it can be readily moved onto fixed bottom wall 254 by lifting the pivotable front wall 258 to the closed position shown in FIG. 26B. Pivotable front wall 258 can then be latched closed using latches 268, and top lid 256 can be closed and latched as shown in FIG. 26A. When storage bins 220 are closed as shown in FIG. 26A, they may be lifted by the powered drive system of deployable corral 214 and stored atop trailer 212, without any manual lifting by the handler or user. Thus, once a bale or heavy article has been lifted a relatively short vertical distance onto the open front wall 258 of a storage bin 220, and moved to the bottom wall 254, no additional manual lifting is required to move the bin up to a rooftop storage position such as shown in FIG. 25A.

Storage bins 220 may be attached to respective corral cross-rails 226 using brackets 266 such as shown in FIG. 25 . Because of the substantial weight that may be carried in storage bins 220, it may be desirable to provide a support leg 270 that extends downwardly from corral cross-rail 226 to engage the ground or other support surface, to thereby stabilize corral rails 218 and corral cross-rails 226 in the deployed configuration, and reduce stresses on pivot joints where cross-rails 226 are coupled to corral rails 218, and where corral rails 218 are coupled to trailer 212. Support leg 270 may be pivotable such as pivotable support leg 36 or vertically slidable such as support leg 436.

The interior of transport trailer 12 may be conventionally outfitted for one or more horses or other livestock, and may also include living quarters for one or more owners or operators of the trailer. Referring to FIG. 31 , in which a roof structure is omitted to show interior structure, trailer 12 defines an interior with livestock living quarters 620 in a “saw tooth” arrangement, in which two stalls 622 a, 622 b are defined by a trailer floor surface 624, respective chest walls or fences 626 a, 626 b, a forward stall divider wall 628 a, and a rearward stall divider wall 628 b. In addition, a front wall 630 is set parallel to forward stall divider wall 628 a and extends from the left sidewall 22 to the right sidewall 22, at an oblique angle relative to both sidewalls. In the illustrated embodiment, each stall divider wall 628 a, 628 b is an interior sidewall, similar to a fence or gate, that extends rearwardly and laterally from the left sidewall 22 toward the right sidewall 22, but terminates so as to leave a gap between the rear end of each divider wall and the right sidewall 22. Rear end portions of each stall divider wall 628, 628 b may be pivotable to facilitate loading and unloading of horses or other livestock animals. The chest walls 626 a, 626 b are substantially parallel to one another and each is set at a first oblique angle, such as about 20 to 45 degrees relative to the left sidewall 22, extending forwardly and laterally from the left sidewall 22 toward the front of the trailer and toward the right sidewall 22. The stall divider walls 628 a, 628 b and front wall 630 are generally perpendicular to the chest walls 626 a, 626 b and, therefore, are set at a second oblique angle relative to the trailer sidewalls 22.

The arrangement of stalls 622 a, 622 b including the obliquely angled chest walls 626 a, 626 b and stall divider walls 628 a, 628 b is such that, in the event of a sudden deceleration of the trailer 12 while in forward motion, the chest of a horse or other livestock animal in one of the stalls will contact the corresponding chest wall 622 a or 622 b, which may be padded to reduce risk of injury or discomfort to the horse, and the side of the horse or animal will contact the divider wall 628 a or forward wall 630. Respective notched regions 632 where the front wall 630 meets the forward chest wall 626 a, and where the forward divider wall 628 a meets the rearward chest wall 626 b, ensures that there is no pinch-point in the forwardmost region of each stall 622 a, 622 b.

Each chest wall 626 a, 626 b extends upwardly from floor surface 624 to an intermediate height spaced well below the trailer's roof panel, so that a horse may position its neck over the chest wall, with its head positioned laterally between the chest wall and the trailer's left sidewall 22. Each chest wall 626 a, 626 b cooperates with a forward end portion of the front wall 630 or the forward divider wall 628 a, respectively, and with the left sidewall 22, to define a respective forward manger 634 a and rearward manger 634 b. The mangers 634 a, 634 b extend down to floor 624 and provide a space for hay or other animal feed to be placed for access by the animal in the respective stall 622 a, 622 b. In addition, each sidewall 22 defines a respective elongate storage chamber 635 that is accessible through openable doors or panels (not shown) provided in an exterior surface and/or an interior surface of each sidewall 22. In addition, a forward storage chamber 634 c is defined by the front wall 630, the right sidewall 22, and a front wall 636 of the trailer.

Optionally, and as shown in FIG. 31 , water troughs 68 may be provided along the interior of the left sidewall 22, which are accessible to horses in each stall 622 a, 622 b. The water troughs 68 may be fixed, or may be retractable in a similar manner as described above, and may be serviced with a plumbing system that selectively supplies water under pressure to each trough, as desired. In the illustrated embodiment, additional utilities may be provided for the operator of the trailer 12, such as a toilet 638 and a shower area 640 including a floor drain 642 at the rear of the animal living quarters 620.

As noted above, transport trailers with integrated corral systems are not necessarily limited to livestock use, and with little or no modification, may be implemented for different purposes such as portable vendor display booths for goods or services at indoor or outdoor display areas. For example, storage bins supported on corral cross-rail 26 and/or swing gate 28 may be omitted, or adapted for use as display cases showing or providing access to goods, video displays, pamphlets and brochures, awards, giveaways, and the like, while additional storage or display space may be provided along the exterior side panel 22, such as in a similar manner to the deployable trough 68. Any of the corral cross-rails 26, swing gate 28, and upper corral rails 42, may be fitted with countertops or table surfaces, shelving, and the like. Shade awning 66 may be printed with company logos or other indicia, with additional display space provided along exterior side panel 22 and/or below the awning's elongate end support rod 70, along the awning support rods 72, etc. In addition, living quarters for persons may be provided in livestock trailers, in vehicle (e.g., motorsports) hauling trailers, in vendor display booth trailers, or the like, without departing from the spirit and scope of the present invention.

Thus, the deployable corral system of the present invention is installed onto or integrated with a transport trailer such as a livestock trailer, and enables powered deployment and stowage of the components with little or no lifting required by the operator. Moreover, animal feed, bedding, tack, and tools or equipment can be stored on the corral system and lifted by the corral system for transport over the roof of the trailer, also without need for significant lifting by the operator. An optional shade awning deploys automatically or manually to provide shade over a portion of the fenced-in area provided by each corral, and an optional trough deploys from a sidewall of the trailer to facilitate watering the livestock in the corral. A powered drive system is operable to perform most of the deployment and stowage steps for the corral, including substantially all of the heavy lifting required, with different levels of automation, actuation, and sensing available as desired.

Changes and modifications in the specifically described embodiments can be carried out without departing from the principles of the present invention, which is intended to be limited only by the scope of the appended claims, as interpreted according to the principles of patent law, including the doctrine of equivalents. 

The embodiments of the invention in which an exclusive property is claimed are defined as follows:
 1. A hinge locking system comprising: a locking pin; a plate having a locking pin receiver defined by a hole disposed through said plate; a movable pin receiver defining an axial bore, said movable pin receiver is movable relative to said plate; and a pair of spaced apart limit stops each defining a respective maximum relative movement limit of said movable pin receiver relative to said plate; wherein when the axial bore of said movable pin receiver aligns with said locking pin receiver, said locking pin is insertable through said locking pin receiver and through the axial bore in said movable pin receiver to lock said movable pin receiver against movement relative to said plate.
 2. The hinge locking system of claim 1, further comprising a channel member coupled to said plate, said channel member having first and second ends each defining a respective one of said limit stops, said first end of said channel member defining a first maximum relative movement between said plate and said movable pin receiver and said second end of said channel member defining a second maximum relative movement between said plate and said movable pin receiver.
 3. The hinge locking system of claim 2, wherein said plate, said channel member, and said locking pin receiver respectively comprise a lower plate, a lower channel member, and a lower pin receiver disposed below said movable pin receiver, wherein said hinge locking system further comprises an upper plate disposed above said movable pin receiver, an upper channel member coupled to said upper plate, and an upper locking pin receiver defined by a hole disposed through said upper plate at said upper channel member, wherein said lower channel member and said lower plate are spaced apart from said upper channel member and said upper plate, and said upper and lower channel members are proximate respective ends of said movable pin receiver.
 4. The hinge locking system of claim 3, wherein said upper channel member forms an upper arcuate track disposed on a lower portion of said upper plate and said lower channel member forms a lower arcuate track disposed on an upper portion of said lower plate, wherein said upper channel member is located directly above said lower channel member and said lower pin receiver and said upper pin receiver are axially aligned with one another.
 5. The hinge locking system of claim 4, wherein said movable pin receiver comprises an upper end that moves within said upper arcuate track and a lower end that moves within said lower arcuate track.
 6. The hinge locking system of claim 1, further comprising a first rail coupled to said movable pin receiver and second rail coupled to said plate, said first rail and said second rail are pivotably coupled to one another and cooperate to define at least a portion of a corral area.
 7. The hinge locking system of claim 6, further in combination with a transport trailer, wherein at least one of said first rail and said second rail is coupled to a portion of the transport trailer and wherein said first rail, said second rail, and said transport trailer cooperate to define at least a portion of a corral area.
 8. The hinge locking system of claim 7, wherein said locking system is selectively operable to a lock said first rail at one of at least two different angular positions relative to said second rail.
 9. The hinge locking system of claim 8, wherein one of said angular positions of said first rail is substantially perpendicular to said second rail, and another of said angular positions of said first rail is at an obtuse angle relative to said second rail.
 10. A hinge locking system for locking a pivotable first element at either of at least two angular positions relative to a second element that is pivotably coupled to the first element, said hinge locking system comprising: a locking pin; a movable pin receiver defining an axial bore; and an upper plate and a lower plate spaced apart from one another, said upper and lower plates having respective holes axially aligned with one another; wherein said movable pin receiver moves relative to said upper and lower plates as the first element is pivoted relative to the second element to one of the at least two angular positions; wherein when the axial bore of said movable pin receiver aligns with the holes in said upper and lower plates, said locking pin is insertable through both of the holes and through the axial bore in said movable pin receiver to lock the first element at one of the at least two angular positions.
 11. The hinge locking system of claim 10, further comprising a pair of guide channels defined by an upper channel member disposed on a lower portion of said upper pivot plate and a lower channel member disposed on an upper portion of said lower pivot plate, wherein said upper channel member is located directly above said lower channel member, wherein said holes in said upper and lower plates are disposed at said upper channel member and said lower channel member respectively.
 12. The hinge locking system of claim 11, wherein said upper channel member defines an upper arcuate track and said lower channel member defines a lower arcuate track, wherein said upper arcuate track is located directly above said lower arcuate track, and wherein said movable pin receiver comprises an upper end that moves within said upper arcuate track and a lower end that moves within said lower arcuate track.
 13. The hinge locking system of claim 11, wherein said upper and lower channel members define maximum angular movement limits for limiting the movement of the first element relative to the second element.
 14. The hinge locking system of claim 10, wherein said upper and lower plates are coupled to the second element and said movable pin receiver is coupled to the first element such that as the first element pivots relative to the second element said movable pin receiver moves relative to said upper and lower plates.
 15. A hinge locking system comprising: a first hinge part pivotably coupled to a second hinge part via a pivot joint defining a pivot axis; a hollow member coupled to said first hinge part and spaced radially outboard of said pivot axis, said hollow member defining a first pin bore; a pivot-limiting plate coupled to said second hinge part and positioned at an end of said hollow member, said pivot-limiting plate arranged perpendicular to said pivot axis and having a locking pin receiver comprising a second pin bore; a stop element coupled to said pivot-limiting plate and positioned for selective engagement by said hollow member during pivoting movement of said first and second hinge parts; and a locking pin; wherein said first and second pin bores are both spaced radially equidistant from said pivot axis; wherein when said first and second hinge parts are pivoted to a first angular position, said first and second pin bores are axially aligned and said locking pin is insertable into both said first and second pin bores to limit or prevent said first hinge part from pivoting relative to said second hinge part; and wherein when said first and second hinge parts are pivoted to a second angular position that is different from said first angular position, said hollow member engages said stop element to limit or prevent said first hinge part from pivoting relative to said second hinge part in the direction of said stop element.
 16. The hinge locking system of claim 15, wherein: said stop element comprises a first stop element; said hinge locking system further comprising a second stop element spaced circumferentially away from said first stop element; said second pin bore is positioned circumferentially between said first and second stop elements; and said second stop element is configured to be selectively engaged by said hollow member to limit or prevent said first hinge part from pivoting relative to said second hinge part in the direction of said second stop element.
 17. The hinge locking system of claim 16, wherein said hollow member follows an arcuate path from said stop element to said second pin bore to said second stop element during pivoting of said first hinge part relative to said second hinge part.
 18. The hinge locking system of claim 15, wherein said hollow member is coupled to said first hinge part via a bracket.
 19. The hinge locking system of claim 18, wherein said pivot-limiting plate is coupled to one side of said second hinge part and defines a first pivot-limiting plate, said hinge locking system further comprising a second pivot-limiting plate coupled to a second side of said second hinge part opposite said first plate with said bracket disposed and spaced between said first and second pivot-limiting plates, wherein said bracket engages a central region of said hollow member, wherein opposite ends of said hollow member extend toward respective ones of said first and second pivot-limiting plates.
 20. The hinge locking system of claim 15, wherein said first and second hinge parts comprise corral rails defining an inner angle of less than 180 degrees and an outer angle of greater than 180 degrees, wherein said hollow member, said first and second pivot-limiting plates, said stop element, and said locking pin are all positioned along only said outer angle, and do not extend into any portion of a corral defined by said inner angle of said corral rails. 